Plug



Dem 27; 1927. 1,653,724

v C. MOLIN E PLUG Filed may v. '1926 @wp/gym@ Patented Dec. 21, 1927.

UNITED srafrnsl PATENT' OFFICE.'

CHARLES MOLINE, 0F MULTNOMAH, OREGON.v

. PLUG.

Application led Hay 7,

to produce a plug which may be attached to any standard socket or receptacle with a minimum amount of effort and in the least possible time in counterdistinction to a common plug which has to be screwed into the receptacle.

Another object is to'produce adevice of this character which may be employed with any standardform of receptacle and one which will not require any instructions in order for a person to use the same.

A still further object is to produce a device of this character which is simple in construction and, therefore, one which can be manufactured at a reasonable cost.

Other objects and advantageswill be apparent during the course of the following description( i f In the accompanying drawings formin a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Figure l discloses a socket with my device in position therebelowand showing in dotted lines the position my device` will assume when engaged in the. receptacle,

vFigure 2 is a cross section taken on the line 2 2 of Figure 3,

Figure 3 is a vertical cross section of a portion of the socket with my device applied lthereto, and

Figure 4 is an enlarged fragmentary de. tail view showing the manner in which the springs of my 'device engage one of the receptacle contacts. ,y v p j At the present time, the receptacles and sockets are provided with athreaded 'contact piece into which a bulb or plug is adapted to be screwed. This screwlng operatlon' is a `tedious one, particularly vif 'the socket has a shade positioned thereon` or if the socket is elevated vto such a position that aV person hasta reach in order to screw the plug into the socket.`

I have, therefore; provided a plu which f may merely lbe pushed into the soc et and one 'which will engage the threads firmly enough to produce'a good contact. It will 1928. Serial No. 107,441.

be readily seen that the 'act of pushing'the plug Into the socket is vmuch-quicker than the screwing operation and one which may be performed with the least amount of physf ical effort.4

In the accompanying drawings wherein for the purpose of illustration vis shown a -preferred embodiment of my invention, the numeral 5 designates the shell of afstandard socket Iwhich socket isprovided with an insulated liningt.

At 7 I have shown a threaded contactl member mounted upon an insulating sup? port 8 carriedwithin the shell 5, which insulating support also carries a contact 9. The structure thus fardescribed is common to all sockets and forms no part of my invention.

Referring now to Figure 3, the numeral 11 designates the body of my plug to the end of which is secured a contact 12 and to` the side thereof a metallic sleeve 13 having spring contacting members 14 secured thereto. The head of the plug is designated at 16 and is provided with the customa prongs 17 and 18 which are adapted to be secured to an electric cord and, in turn, have tlieir ends engage contacts 19 and 21, respectively, 'whch are, in turn, connected to the contacts 12 and the metallic sleeve 13. The result of' this construction is that when the plug having a cord ,attached theretois inserted in a ,socket by merely pushing the same into the socket, contact is madel between the threaded portion 7 and the springs 14 and also between the contacts -9 and`12, thus completing `the circuit to the cord so that the current delivered by the socket may be used as desired. i

It is to be understood that the form of' my invention herewith shown' and described is to be taken as a preferred example of the same, and that various changeslin the shape, sizeA and arrangement of parts ma be resorted to without departing from t e spirit 0f the lnvention or the scope of the subjomed claim.

Having thus described' my invention, I claim f In an electric plug, a base, a. contact positioned upon the end of said base, a metallic 105 sleeve surrounding arportion of said base, a

' plurality of springs secured to said metallic Q Y 1,658,724 y -sleeve andadaptedto contact the threaded portion of an electric socket, a removable head, contacts carried by said head, other contacts arranged within said base and con- 5 nected to the first mentioned base contact and the sleeve respectively, said head carl ried contacts being adapted to complete a `oinmmzs MoLINE. 

